WorksheetsWorking in the lab
Total questions: 15
Worksheet time: 9mins
Name
Class
Date
1.
One way to stay safe in the lab is to:
a)
Begin to check out all of the lab equipment while the directions are being given.
b)
follow the directions you are given.
c)
talk to your lab partner while the rules are being given.
d)
make up your own rules as you go along through the experiment.
2.
Which item is not considered protective clothing in the lab?
a)
Safety goggles
b)
Aprons
c)
Bulky jackets
d)
Gloves
3.
Chewing gum in your mouth can become contaminated with chemicals you may be working with in the lab, even if it never leaves your mouth.
a)
True
b)
False
4.
At the end of any lab session you should:
a)
leave all materials used during the lab out on the table.
b)
Wash your hands thoroughly.
c)
have one person clean up everything.
5.
What should you NOT do in case of a fire at your work station during a lab?
a)
Tell the adult in charge and get away.
b)
Use water, especially if it's an electrical fire.
c)
Use a fire blanket to smother the fire.
d)
st
6.
Which of the following is NOT a brand name of heat-resistant laboratory glassware that you should use it?
a)
Pyrex
b)
Kimax
c)
Tupperware
7.
What TWO things should you use to protect your hands when handling hot containers?
a)
Tongs and heat-resistant mitts
b)
Tongs and a dish towel
c)
Bare hands
d)
A dish towel
8.
Before you use hot plate, make sure the socket you plan to use is at least ____ feet from a source of water.
a)
2 feet
b)
6 feet
c)
20 feet
d)
60 feet
9.
Which of the following produces heat with an open flame?
a)
ground-fault circuit interrupter
b)
bunsen burner
c)
electric stove top
d)
a ring stand
10.
You should never use a chemical from an unlabeled container because you cannot be sure what chemical is inside the container.
a)
True
b)
False
11.
Never hold sharp instruments by their handles, but always by their sharp parts.
a)
True
b)
False
12.
Non-hazardous wastes include things such as all of the following EXCEPT:
a)
Sand
b)
Paper Towels
c)
Chemicals
d)
Soil
13.
A test tube is:
a)
a container used to hold liquids.
b)
an instrument that has an opening that is narrower than its base.
c)
a cylinder of glass that is closed at one end.
14.
When stirring or pouring liquids do not:
a)
touch liquids with hands.
b)
label your container before adding a liquid to it.
c)
use a funnel to prevent splashing of chemicals.
d)
wear safety goggles.
15.
A ___ is a slide that is prepared by adding a drop or two of water to the specimen.
a)
wet mount
b)
dry mount
100 %
